Reinforcing device for concrete.



UNITED sTAr n s CHARLES A. HANSON, OF CHICAGO, ILLINOIS.

rgirnntr OFFICE.

REINFORGING DEVICE FOR CONCRETE.

Patented J an. 3, 191 1.

Serial No. 559,635.

To all whom it may concern: I

Be it known that I, CHARLES A. HANSON, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Reinforcing Devices for Concrete, of which the following is a specification.

My invention relates to concrete construction and refers more particularly to reinforcing means especially adapted for use in roofs and floors.

The chief objects of the improvements which constitute the subject matter of this application for patent are: to provide a combined reinforcin and spacing construction that can be readily assembled: that will be especially applicable to horizontal walls, and that will be equally effective in whatever position it may be applied.-

Otherfeatures which have received attention are: the production of a reinforcing framework that is simple in construction, composed of members 01' units that can be manufactured by economical processes so as to roduce an article of unusual cheapness, an by combining simple rods with the specially designed members, the resulting structure combines the requisite stiffness and lightness desirable in work of this class. i

The manner-of joining the cooperating parts presents novel features and permitsthe members to be quickly placed in proper relation, where they are firmly held 1n frictional engagement, and the frame thus readily built up is sup orted by suitable feet which rest upon the orm or other temporary sup port, and when the -structure is completed the reinforcing members are properly embedded in the concrete material.

I accomplishthe desired results by employing the structural frame illustrated in the accompanying drawing which forms a part of this application, the general appear ance of the assembled members, and the details of construction of the frame and its interlocking units being disclosed in the following views Figure 1 is an isometric perspective showing a portion of a reinforcing framework embodying my improvements: Fig. 2 IS- a side elevatiton of a part of one of the improved spacing bars. Fig. 3 is a top plan view of a spacing bar with the rod engaging ears bent to inoperative position to permit the reinforcing rods to be. inserted in their i seats, and Fig. 4 is an end elevation of a spacing member, with a fragment of a reinforcing rod in engaged relation therewith. Referring to the details of construction, the numeral 5 indicates a spacing chair or bar, constructed of a sheet metal strip of suitable gage and width and of any desired length that may be convenient to manufacture and handle. At spaced intervals along one of its margins the said strip has round holes 6 formed therein near the edge of the bar, leaving a narrow connection which is severed in the median line, as indicated at 7 producing lugs or ears 8. These ears are bent outwardly, as shown in Fig. 3, being arranged in stag ered relation upon the opposite sldes of the bar, permitting the reinforcing rods 9 to be laid 1n the notches 6 thus formed and after the rods are in place the ears are bent back to their original position in the plane of the bar, thus inter locking the rods and bars in mutual engagement, as shown in Figs. 1 and 4:. It is desirable. to support the frame thus formed by the conjoined members so as to have it centralized within the concrete when work is completed. To this end the other margin of the spacing bar is provided with pro jecting angular lugs or feet 10 which extend laterally in staggered relation upon opposite sides of the bar, and their extreme the bar, as shown in Figs. 2 and 3. The said feet 10 are preferably arranged in pairs, each pair being formed by diverging cuts, indicated at 12, which meet at the margin of the bar in a line midway be tween each two adjacent holes 6. The triangular flaps or ears thus formed are then scribed and shown in the drawing.

The manner of assembling the spacing bars and reinforcing rods is clearly disclosed -in Fig. l, and when thus arranged the tips 11 of the triangular feet will rest upon the form 13, shown in dotted outlines in Figs. 2 and 4, and thus raise the structure sufii- -cient1y' above the support to permit the plasand lugs, practically embedding the framework within the concrete, and when the work is completed and the form removed, the only portions of the metal structure exposed will be the points 11 of the feet, and

tie material to flow underneath the rods,bars

points 11 drop below the adjacent edge of bent outwardly and downwardly as de- I as their surfaces are comparatively small they will'be scarcely discernible on the wall surface.

It may be found desirable, in some instances, to omit the severing of the connecting bridge to form the ear 8, thus leaving'the said bridge intact, in which case the .rods will be threaded through the holes 6 which tend to resist strains applied later ally, longitudinally and vertically to the structure of which they form parts.

While I have shown my improved spacing member arranged in horizontal relation to the rods 9, it will be apparent that they will be equally effective when placed vertically in a Wall, and that other forms of cooperating members than rods 9, can be used if desired. In fact, under certain conditions, the members 5 may serve solely as reinforcing means as they possess all of the characteristics of reinforcing bars when made of suitably dimensioned material.

Having thus described my invention, what I claim as new, is

1. A spacing member for concrete construction, consisting of a flat bar havin spaced apertures adjacent one margin, an integral supporting lugs extending outwardly from the sides of said bar and downwardly from the lower edge thereof.

2. A spacing and reinforcing member for concrete construction, consisting of a flat bar having spaced apertures adjacent one margin, ears extending from the apertures, and integral supporting lugs on'the other margin of said bar, said lugs extending outwardly from the sides of said bar and downwardly from the lower edge thereof and arranged in staggered relation upon opposite sides of the bar.

3. A reinforcement for concrete construction, comprising fiat parallel bars having spaced apertures adjacent one margin, integral supportin lugs on said bars extending outwardly .rom' the sides of said bar and downwardly from the lower edge there of and arranged in staggered relation upon ing at right angles to said bars and engaging said apertures.

4L. A reinforcement for concrete construction, comprising a frame formed of a plurality of flat bars arranged parallel to each vided with spaced apertures adjacent the upper margin, rods arranged at right angles with said bars and engaging said apertures,

and triangular spaced supporting lugs ex-.

tending from the lower margin 0 each bar, the said lugs being bent outwardly from the sides of the bar and downwardly from the lower edge thereof in staggered relation upon opposite sides of the bars.

In testimony whereof I afiix my signature in the presence of two witnesses.

CHARLES A. HANSON. Witnesses H. DE Los HIGMAN, C. B. BENJAMIN.

opposite sides of the bar, and rods extendi 

